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' PUNCH l Filed May 9, 1936 y l5 Sheets-Sheet 13 FIGJB IFYERENTIALS Account NUMBER Ig xnzvvnsnomcshunnms a EbAs mit: I QRREARSI I; auf ons ELEC. 25s g'gfm mun AMouN'r xw-Hks AMoum' GAS Lscl 0 n U l] l DUI] E [Il] UU 0 l n u n 1 zz 5 I] '2 w n u n n n u nu 44 i 515 [l U s6 I] E1] 17 I] a II ll n u In v elo n u, lan 1| 14 za az 'aa sa 41 u 4 n n a es 101| 1s eo FlG.l9

WHEN EXTENSION KEY IS DE- EXTENSION KEY IS DE" WHEN THE SPECIAL KEY (G) PRESSED FOR GASTHE FOL- PRESSED FOR ELECTRIQTHE IS DEPBESSED (AFTER DEPRESS LOWING EXTENSION WILL BE FOLLOWING EXTENSION WILL AN EXTENSION KEY ABOVE40)THE MADE `IN THE COLUMNS INDI* BE MADE IN THE COLUMNS IN' EXTENSION WILL BE MADE DIC TED THE COLUMNS INDICATED @al 1%? BY Patented Feb. 1, 1938 Ralph E. Page, Binghamton, N. Y., assignor to International Business Machines Corporation,

New York, N. Y., a corporation of New .York

Application May 9, 1936, Serial No. 78,748

14 claims. (ci. mme) 'Ihis invention relates to record-card punch# ing machines andmore particularly to punching machines for punching cards of the well known Hollerith type. In the tabulating machine art 5 it is the common practice to punch cards with perforations which designate various vkinds of statistical data. These cards are then utilized in sorting and tabulating machines to 'obtain various classified records of the data on the cards. In the use of such tabulating systems,'it is sometimes necessary to duplicate certain data on large numbersof cards comprising a plurality of groups of cards. 'This is usually done by controlling the punching mechanism from a master card; that is, the perforations in certain columns ofthe master card control the punch mechanism f to punch the same data 1in the same columns or in other selected columns of a new card. Certain data may be common to all ofthe cards comprising a single group, but\analogous data in the same columns data may vary with each group. These data may be set on adjustable devices such, for instance, as those disclosed in U. S. Patent No. 2,016,706 issued October 8, 1935 to G. F. Daly and Gunne Lowkrantz, wherein an adjustable device is provided for each card column and the variable data for each card group may beset on the device corresponding to the column in which itis desired to punch it.

Also, there are those data which are peculiar to and vary with/each individual' card. These data have been punched manually heretofore by depressing a key for each column to be punched, the.key depressed representing the data to be punched in that column. To punch manually data which varies for each individual card on a large number of cards consumes a great deal of time. Y

The broad-object of the instant invention includes the provision of a' device which makes it `possible to control the puniing of data in a plurality of columns by the operation of a single manipulative device. f Y

Another object of this invention is to provide novel means whereby operationv of a single manipulative device conditions a plurality of circuits so that plural related'data may be punched in a plurality of elds. f

` Still another object is to p rovide means to con- 'trol a punching machine by a single manipulative device to punch certain data ina plurality ofv vcard elds and to punch other data' in other elds.

A further object is 'to providel means to selec- 4tively punch plural data in a. given card eld the drawings which accompany and nism.

key circuit selecting device.-

under the control'of la single manipulative device.

With these and incidentalobjects in view, the invention includes certain novel features of construction and combinations of parts, the essentialelements of which are set forth in the appended 5 claims and a preferred form an embodiment of which is hereinafter described with reference to form a part of this specification.

In said drawings:

Fig. 1 is a plan view illustrating the several devices comprising the machine.

Fig. 1a is a -plan view of the card reproducing i mechanism.

Fig. 2 is a view in side elevation of a portion of 15 the punch mechanism, partly broken away to show 'som'e of the mechanism.

Fig. 3 is a sectional view through the punching mechanism.

Fig. 4 is a partial elevation of the left end of 20- the machine showing the card eject-ing mecha- Fig. 5 isa sectional View on line 5 5, Fig. 4.

Fig. 6 is a sectional view illustrating the brush shifting and controlling device. 25

Fig. 7 is a detail view showing the carriage escapement mechanism.

j Figs. 8 and 9 are detail views`of partof the carriage escapement mechanism.

Fig. 10 is a sectional view through the rate, 3,'

Fig. 11 is a detail view showing the date key and rate key latching device. Fig. 12 is a top plan view of the rate' key mechanism with a part of the casing lroken away for 35- clearness.

Fig. 13 is a fragmentary view 'of a part of one of the rate keys showing the manner in which the circuit contacts are made.

Fig. 14 is a detail View of the rate key for rate 40 42 showing connections from the punch circuits to the columnar circuits. l v

Fig. 14a is a detail view of the 30 rate key showing the circuit connections.

Fig. 15 is a sectional viewthrough taken on line |5|5, Fig. 1.

Figs. 16 and -17 constitute the circuit design. Fig. 18'illustrates atypical card punched on the machine, and

Fig. 19 illustrates a'schedule of rates. The machine' is arranged for convenient `right l hand operation by a nger piece or handle 2' (Fig.

1a.)'l 1avinga normal position at the right hand end ofthe machine and being mounted for leftward movement along' the side ofthe machine. 66

When the handle is moved to the left, in this manner a statistical card 3 is fed from the bottom of the hopper 4 by the usual picker knife 2 and advanced to the left to be operated upon by the vpunching mechanism comprising punches 5 'Ihe punches 5 may be operated normally by means of numeral keys 9 (Fig. 2) or may be controlled by a duplicator in accordance with the perforations of a pattern member which may be a previously punched card functioning as a master card I0 (Fig. 1a). -Such master card is also supported by a carriage 8 and 1s moved through the duplicator concomitantly with thermovement of the blank card 3.through the punching mechanism.

'I'he punches 5 may also be operated under the control of the electrical circuits illustrated in Figs. 16-17 which circuits are set up -by the keys illustrated in Figs. 10 and l2 in a manner to be described later. Also the punches may be operated bythe keys shown in Fig. which close circuits to the selector magnets to be fully described later.

'I'he handle 2 is mountedV at its left end on a bracket II l(Fig. 1a) and at the right of the bracket the handle is .oiset to provide a finger .engaging portion. Bracket I I has a rearward extension having secured thereto a block to which is pivoted the previously mentioned picker adapted to feed cards singly from the bottom of the v pack in the hopper 4.

J The handle 2 may also be used to. actuate the' card carriage 8. To this end the bracket II is turned to extend through a longitudinal slot ina tube I2 (Fig-2) and. is secured to a rod I3 slidable in said tube. Adjacent the extreme leftward position of the handle 2 the tube I2 is cut away at the top to permit teeth I4 of a rack portion I8 of [rod I3 to mesh with the teeth of a pinion I5 and a gear I5.. The pinion I5 is secured to a shaft I1 on which is mounted the usual coil spring for returning the handle, when released, to its normal position as more fully shown and described inl the lpatent. to Lee and Phillips, #1,772,186 dated August ,5, 1930. The gear IGs suitablysuppo/rted for rotation and is fixed to a member I9 havinga single tooth 20 in the plane of a pawl 2l pivoted to a disk 22 attached to shaft 23. At its other end shaft 23 is provided with a gear 24 (Figs. 1a and 3) fixed thereon and meshing withv a tooth in the lower edge of a rack 25 which may be considered as forming part of the card carriage 5. l

To control the clutch device --2I provision is made of a cam 26 (Fig: 2) pivoted at 21 and having a cam face 28 cooperating with a pin 29 cause the cam edge 28 to rock the pawl 2l' out selected punch 5.

of engagement with the shoulder of disk I9. In this position of the parts the carriage 6 is freely movable.

When, however, the ngerpiece 2 is shifted to the left, rack I8 through block 30, releases the cam 26 permitting a spring 32 to rock the pawl 2I sufficiently to pass the shoulder 20 which in the meantime has been brought to the necessary position by initial clockwise rotation of the gear I8 by'the teeth I4 of the rack I8. It should be observed that a leftward movement of the handle 2 through clutch device 2li-2| transmits power to move the carriage 6 to the right to receive a card 3 positioned by thepicker in the punching mechanism 5.

The top of rack 25, observing Figs. 3 and 7, is

also provided with rack teeth 33 inclining towards the left end'of the machine which teeth 33 are provided for the purpose of controlling the stepping of the carriage by increments to provide for successively punching the tcard in the lseveral columns. The escapement mechanism is of the same general nature asthat disclosed in the Schaai Patent No. 1,426,223, granted August 15,

1922 and reference may be had to this patent for. further details of construction and operation. i

It is sucient to state at the present time that upon an initiation of the handle 2' to the left the clutch members 20, 2I 4are shifted into engagemeiit thus connecting gears I6 and 24. The

. escapement mechanism referred to is adapted to hold the carriage 6 when it` has reached its extreme limit of movement and at this time the first column of thecard to be punched will lie `beneath the row of the punches 5 (Fig. 3) which have enlarged upper ends guided in a member 34 and lower ends extending through openings ina guide or stripper member 35 and" immediately above openings 36 in a die plate 31.

'I'he punches 5 are of the general form disclosed in the above` mentioned patent to Lee and Phillips, and are normally held in raised position by springs 38 interposed between the enlarged heads 'thereof and the stripper member which is provided with openings to receive thelower However, when any numeral key 9 i's'depressed it will actuate a bell cra'nk 45 against the vaction of suitably'connected springs. The'forward arm of each bell crank has a. round-ed head fitting into a notch in the shank of the key, the upright end having a pin 41 in a slot in the lower edge of the corresponding interposer 39.' Such interposer will then be advanced to such a positionl that depressionof the member 44 will effect depression of the interposer and consequently of the corresponding punch.

Upon movement of any of the interposers 39 a pair of contacts 95- are adapted to be closed thereby vclosing the circuit to a punch magnet 494 (see also Flg. 16) which through intermediate mechanism rocks the depressor 42 to actuate the Upon energization of. the punchu-magnet 49 (Fig. 2) in this manner thearmature 58 -is swung i about'its pivot 5| away from the'abutment or stop 52 and through `the link 53 rocks a bell crank 54 about the pivot 55 to draw the link 56l downwardly and rock the plate or depressor 42.

Subsequently the circuit of the magnet 49 is broken allowing the return of the depressed interpo'ser to normal position. At this time the escapement mechanism is effective and the rack:V

25 and card carriage advance one tooth to permit punching in the next column of the card.

Acrossthe'lower edge of all of the interposers 39 is a. bail or universal member 98 pivoted at 99 and reaching into notches |88 in the interpci-sers. Attached to the bail member 98 is 4a depending arm 9| the lower end of which is held against a projection 92 on the link 53 by a spring 93. This spring also Aurges the arm 9| downwardly rocking the bail 98 clockwise into engagement with the right hand wall of the slots |88l in the interposers 39. The arm 9| is provided with shoulder 9 3 normally hooked under the contact leaf 94 of the pair of contacts 95.

When a key 9 is depressed moving the associated interposer 39 to operative lposition this interposer rocks the bail 98 counterclockwise raising the arm 9| and closing contacts 95. This causes energization f magnet 49 as will be observed in the wiring diagram (Fig. 16) to operate the perforating device. As the punch passes through the card and the link 53 moves tothe right the.

projection 92 carries the arm 9| to the right re' leasing the contact leaf 94 thus opening contacts 95 and deenerglzing the magnet 49. This permits the punch actuating mechanismr to returnl to normal positions. f

When the key 9 is released the interposer 39 returns and permits the bail 98 to turn clockwise to normal position lowering arm 9| so that its shoulder 93' resumes its position un'der the leaf 94 where it is ready to close contacts 95 when the next key is depressed. It will be recognized that when the contact leaf 94 is released contacts 95 cannot `vbe closed again until the key 9 which eected their closing has been released and the next key depressed.

The operation of the controlled by means of the duplicator which 'causes the selector magnets68 (Figs. 3 and 16) to be actuated in accordance with theperforations of a previously punched master card which'in the present instance is arranged for punching in eighty diierent columns. The selector magnets Vare twelve in number and operate the ten numeral keys and two auxiliary keys, arranged to operate the'two punches at the end ofthe row farthest from the operator. d

Such operation of the keys controlled by the selector magnets 68 may be effected by means of levers 6| (Fig. 3) having their left hand ends formed into rounded heads 62 extendingv into slots in the shanks of the keys to be controlled thereby and extending in the other direction substantially horizontally into a casing' for thev selector magnets above the cores of the. magnets 68. The levers 6| are pivoted to vbrackets 63 spaced apart and attached to the mainframe. Adjustably attached to each of the levers Slis an armature 64 cooperating with the correspond- Extending from one end of each is a'wire (not shown) which is connected to a related 'spring contactl plate 66 (Fig. 6) the series of .which are carried by a block 61of insulating' material.

Each spring 66 is adapted for a sliding con-l ing magnet.

unches 5 may also be" tinuous electrical contact with an associated brush holder 61a which carries its particular analyzing brush '68. The series of brushes 68, of which there are thirteen, are adapted to bear against a metal cylinder or roller 69 mounted on 5 a non-conducting roller 18 which is carried by a shaft 1|. The brushes 68 are carried by an insulating brush holder 12 secured between a pair of side plates 13 of a yoke or bail shaped member designated generally by reference numeral 14. 10 Each side plate 13 of the frame 14 is supported at its upper end by a link 15 pivoted to the frame portion 16 and at their lower ends the plates 13 are supported by means ofra parallel link 11.

Intermediate each plate 13 and related link 11 15V is a toggle .plate 18 pivoted upon a spring stud 19 securely fastened to the frame member 16. The end of the link v'l1 distant from its connecting point tothe toggle plate 18 is pivotally secured to an armature structure 80, the latter being 20 ment 'of the toggle plates 18 about their pivot 25' 19 elevates the frame 14 bringing the analyzing brushes 68 into contact with the ,roll 69.

The brush holder 12 and analyzing brushes 68A extend completely across the duplicator and when a master cqd I8 is in the duplicator it' will 30 pas between the roller69 and all of the brushes 68 except the one tothe left in Fig. 16 which is in continuous contact with the roller 69 when n i the latter is in-lowered position.

. It will be evident that when there are no per? 35- forations in the portion of the master card between-the Contact roller` 69 and the seriesof;v brushes 68 none of the selector magnets 68 will be energized. When, however: a perforation in .the master card I8 comes into position over one. o Hof. the analyzing brushes v88 the circuit to one' of the selector magnets 68 will be completed and by energization of the corresponding selector magnet 68 the associated punch 5 will be oper- Associated with the master card table is f a 45 resilient plate 84 tFig.A 6) adapted to beheld down by a latch 85 during normal operation. When the latch is releasedv and the plate 84 is elevated the master card may be placed upon the 50.

master card carriage. Attached to the plate 84 is a contact operating member 86 adapted to engage and close contacts 81 when the plate is latched. Upon elevation of thelatter to place amaster card on the carriage contacts 81 will 55 I open and since they are in series connection withhthe brush magnet- 83 (see Fig. 17) the latter will be deenergized to lower thebrush holder 12 toits lowermost position to permit the card to bev shifted on top ofthe master card carriage With- 60 As a similai` interference between the brushes 53 and the perforations of the master card would result as the master card is shifted to its initial '65 punch controlling position by movement of the Afinger piece from the right 'to the-left certain other mechanism is also provided to lower the brushes during this movement. This improvement formsino part of the present invention andfm` out danger of damaging or bending-the brushes y secured to' the shaft |1-is a plate |0| (Fig. 3) which when rocked clockwise is adapted to close a pair of contacts |02 (see also Fig. 17) through the medium of a pin |03. A suitable friction device (not shown) is interposed between shaft I1 and the plate |0I, details of which are fully shown and described in the aforesaid patent to F. L; Lee. This clockwise rocking movement occurs when rack 8 is shiftedtto the left coincident with a corresponding movement of the finger piece during whichtime' the master Vcard carriage is shifted to the right. Contacts |02 `are in series connection with the brush magnet 83 (see Fig. 17). When the contacts |'02 are open the brushes 68 will be lowered. Bya reverse movement of shaft |1 which occurs during a movement;I of the carriage to the left Aas in punching I oper-ations, shaft |1 will be rocked oppositely/to l cfa/use the brushes '68 to be shifted upwardly into contact with the contact roll 69.

` The escapement mechanism previously referred to is of the same general nature as thatdisclosed in the patent to Schaaff No. 1,426,223 granted August 15, 1922 but in order to Vgive a. better understanding of the operation of the machine a brief description of the. mechanism will now be given.

Shaft I(Fig. 7), which is rocked as .an incident to each punching or spacing operation, has secured at one end oppositely extending arms and ||2, of which is provided with a laterally projecting pin I|3 for engagement with an enlarged opening in a stepping d og |4 which is loosely pivoted. 'Ifhe opposite arm I 2 is provided with a laterally extending pin II5 extending in a. slot formed in the locking dog |I6 be tw'een its pivot II1a and its engaging end.

When the shaft I|0 isv rocked the arm III,v

through the pin ||3, lifts the stepping dog ||4 out of one of the notches in the rack bar 2.5 and at the same time the arm I I2 depresses the lockv ing dog I6 into a notch between theteeth 33.

At this time a-spring |I1 advances the looselypivoted stepping dog ||4 a short distance vbut -sufiicient to permit this dog to rest upon the top ofthe next tooth. When the locking dog ||6 is again raised out of engagement with the teeth 33 at the upper edge of the rack bar 25 as an incident `to the counterclockwise movement of rod ||0 the stepping dog J |4, due to the movement of the rack bar 25 will ride down along the tooth on which it rests until the next tooth 33 strikes the end thereof and thesaid carriage 6 is thereby arrested.

As the shaft 99 upon which universal bail 98 is 'fixed isrocked from the position shown in Fig. 7

to the position shown in Fig. 8 by a shifting of an interposer 39, a T-shaped element I9 secured to shaft 99 is rocked slightly clockwise.

A spring is coiled about shaft 93 and has its ends abutting a projection |2| of element ||9 and a projection |22 of an element |23 -loose on shaft 99. The projection |22 (Fig. 8) normally abuts va. lug `|24 cfa. contact operating member |25 loose on shaft ||0, the result being that |I9 is rocked. When the stepping dog I I4 is elevated the vupper edge contacting with an arcuate lug |26 of arm |25 will elevate the latter permitting the projection |22 to be urged by thespring |20u -to ride under the lug |24. An insulating block |21 of the upper blade of contacts |28 contacting with a pin |29 on arm |25 will result in opening contacts |28.

\ The contacts 28 (see Fig. 16) 'are in series `ing lug |46.

vas a who1e it is sumclent to 'understand that connection with the common brush 68. and when opened break the duplicator circuit to prevent arcing at the brushes 68.

As the universal bail 98 is returned to its normal position -a projection |30 strikes a projection |3| of element |23 and rocks the latter clock- Wise. It will also be recalled that when the armature 50 (Fig. 2) was shifted the extension 9 2 disengaged the notch 93' of arm 9| from lower-icontact blade 94 so that when bail98 is in the rocked position notch 93 will be positioned above the lower contact blade 94. The arcuate edge of projection |22 is of. sufficient length to retain contacts 28 opened until the notch 93^reengages the lower contact blade 94. lThis insures that the arm 9| will be in position to close contactsr 95 by the subsequent shifting of a selected interposer prior to the closing of the duplicator-circuit by closing of contacts I 28.

An explanation of the parts just described will be given in connection with the preferred wiring illustrated in the wiring diagram of Figs. 16 and 17. Current is supplied to the electrical instrumentalities by line wires I33-I34. Contacts- 95 are in series with the punch magnet 49 so that when these contacts-.are closed themagnet 49 will be energized.

Energization of the magnet 83 to shift brushes 68 is dependent upon -closure of? four sets of contacts, contacts 81 closed when the plate 84 (Fig. 6) is latched; column cutout contacts |35 controlled in a mannerhereinafter to be described, contacts |02 governed by shaft .I1 which are closed-when a master or blank card is shifted in a punch controlling direction and'opened when the master card is positioned to its initial punch controlling position, and a set of contacts |36 which in the normal punch operations of the machine are I from said brush to the line. side |33 extendsv through the contacts |28 just described (Figs. 7, 8 and 9) and the contacts |36. The duplicator circuit is closed only when the pairs of contacts |28, and |36 are closed.

It will be recalled that when the carriage is shifted to the right to position the master card the brushes 68 are moved away from the contact roll and if it is desired to move the master card backwardly after it has passed by the analyzing brushes a lever |44 (Fig; la) is actuated. This lever is mounted on a pivot |45 at the left end of `the carriage 6 and has 'a downwardly extend- When the lever `|4 4 is actuated to move the card carriage 6 to the right the lug |46 presses against a bail I 41 and rocks a shaft |48 on which the bail is mounted and inasmuch as the'shaft and -bail extend along the path of the movement of thecard carriage'the shaft |48 and bail |41 will be. held in operated positions as long as the handle |44v is pressed to the right.

Projecting downwardly from the shaft |48 is a fingerv |49 vwhich upon turning the shaft as described engages an insulating member- |50 on a, spring |5|` and by flexing the spring disengages the contacts |35 therebyopening the brush magnet-circuit 83. When the' carriage has been positioned at the desired point the lever |44 is released, resulting in the -energi'zation of magnet merely depressing the-appropriate key 9, since f the carriage is stopped by the usual column stop |56(Fig. 1a). Several index points of the last column may be appropriated for identification purposes in order that the second perforation may identify the punch operator, a classification or the like.

Provision is also made of means for automatically returning the carriages 6 and 8 to their normal starting position by power instead of manually returning them. Such an arrangement expedites operation of the machine and requires less attention on the part of the operator. The mechanical parts for obtaining this result will now be described followed by a description of the electrical controlling instrumentalities.

Secured to the undersideA of the base of the machine is a motor |51 (Figs-2 and 3) having a. clutch connection to a lstub shaft |58 to which is secured a worm gear |59 (Fig. 3) in mesh with a worm gear |60 secured to a shaft |6| one end of which has ysecured thereto a ratchet shaped clutch element |62 (see Fig. 2). Loosely mounted on shaft |6| is a gear .|63 meshing with teeth on the underside of rack |8vand to which gear is secured a disk |64.

Pivoted at |65 to disk |64 is an arm |66 provided with a clutch tooth |61., The free end of arm |66 is connected to a toggle plate |68- by a link |69, the end of toggle plate |68 distant from its pivot |10 being articulated at |1| to a rod |12. T'he rod |12 is urged by a spring |13 and ts in an aperture in a pin |14 rotatably mounted on the disk |64. By virtue of this construction rod |12 and plate |68 act as a toggle, spring |13 acting to impositively hold tooth |61 in` orout of engagement with the` clutch Vteeth of ratchet wheel |62,l y

For the purpose of effecting the clutching action a magnet |15 is provided and when energized attracts an armature |16 so that an arm |11 engaging a pin |18 of arm |66 rocks the tooth |61 into engagement with ratchet Wheel |62. YThrough link |69 the toggle connection will be moved centrifugally spring r|13 acting to hold clutch tooth in engagement with the ratchet teeth. Gear' |63 will thereupon be driven in a counterclockwise direction substantially a single revolution shifting rack |8 tothe left just as 'if it was caused` by movement of`iinger piece` 2. This will, similarly, result in moving carriages 6 and 8 oppositely to their initial punch control-` .ling position.

At the termination of theI counterclockwise Y movement of gear |63 a tail |19 of plate |66 will strike a projection |80 of a fixed pl'ate |8| to effect the disengagement of the tooth |61 and ratchet, wheel4r |62 by a reverse action. reverse action of the toggle .will cause the tooth |61 to be retained out of engagement with the teeth of the ratchet wheel |62 whereupon the coil spring employed lto return the handle- 2',

Tully shown and described in Patent No. 1,772,186

will act to return theparts to normal position.

' provided.

TheA

As shown land described in the patent just l"mentioned, a supplemental coil spring is also provided to shift the carriage intermittently under control of the escapement mechanism-as an incident to each card punching operation.

IPlate |64 is preferably mounted on gear |63 by pin and slot connections |82 and |83 (Fig. 2) and connected to each other for driving movement by springs |84. This construction is pro, vided to take up the shocks due to starting from a position of rest and the sudden4 stoppingof the rotation of gear |63.

Also secured. to the pivot of armature |16 is an v arm |85 (Fig. 3) the free end of `which is adapted to bear upon an insulating block |86l to open contacts |36 when magnet |15 is energized. Contacts |36 are retained opened by a latching bell crank |81, a lug |88 of which is adapted togbe struck by a bent up plate '|89 (Fig. 2) secured to gear |63 at'the termination of the drivingmovement of the latter. Contacts |36 as indicated in Fig. 16 are interposed in ,the circuit of ybrush magnet 83 so as to cause the lowering of brushes 68 (Fig. 6) during the power restoration of the card carriages but the circuit is closed at the. termination thereof to provide for the contact of the brushes 68 with roller 69. Below contacts |36 (Fig. 3) are motor control contacts |90 which are latched closed upon an energization of magnet |15 to' complete the motor circuit (see Fig. 16) and are unlatched to stop the motor at the termination of the driving operation in the manner just described. c

For controlling the energization `of the trip magnet |15 (Fig. 16) a painof contacts |38 is The energzation of magnet |15 is therefore dependent. upon closure of contacts |9| and |98. The contacts |9| ar closed when the carriage is in the last columnar position. Contacts |98 (see also Fig'. 6) are closed when the brushes 68 arelowered, and these contacts are opened when the brushes are raised into'contact with the roll 69.

Means are provided for automatically. removing July 4, 193,3, to which patent recourse may-be had for details of construction and operation.

Stated generally, the gripper comprises (Fig. 4) a pair of jaws 205 and 206 urged together by a nat spring 201 but the abutment of apin 208 with the upper jaw 205 separates the jaws in order that the punched card may be received by theoslit-like separation.` The card occupies a position between 'the jaws at the termination of the punching of the last columns in thecard. The gripper unit is pivotally mounted on a shaft 209 vto whichis secured a gear. 2|0 adapted to be'driven by a gear 2|| by an idler gear 2| 2. Meshing with gear 2| is a slidably mounted rack 2|3 the extremity of which terminates in an adent to J. M.,Cunningham, No. 1,916,965, issued l left against the tension of a spring 2|5. This caused 'a cl ckwise movement of shaft 209 through the train of gears 2|0, 2| |,'2|2 to bring the gripper Aunit to the position shown in Fig. `4

whereupon a-latch lever 2|6` will engage 3.5110111- vder 2 |1 ofthe lower jaw 206. At this time a certain amountof'compression will be stored up in spring 2|5. Shifting of latch 2|6 is eiected by energization -sprlng2l5 to cause the counterclockwise rotation of the gripper unit. As the jaw 205 leaves pin 208 spring 201 will act to cause the latter to close upon the lower jaw 206 thus securely-gripping the card and nipping the same in reversed position.

A stationary pin 222 may suitably coact with one of the jaws to separate them permitting the released card to fall in a receptacle 223.

It is preferable, however, to suitably strip the card from the grippers and to this end a pair of strippers 224 are provided. 'Ihe link 2|9 is pivotally connected at 225 to one of said strippers so that when magnet 9 9 is energized the strippers will be shifted to the right. As the jaws rotate to their flipped positions the strippers will project through suitable slots in the grippers in order that the strippers may be positioned behind the card.

Referring to the wiring diagram, the stacker magnet |99 it will be recalled is energized when by the closure of the last column contacts I 9| and operation of the space key |94, or alternatively, closure of contacts |95 by depression of a second punch key 9 if switch |96 is closed. 1

When the card lust punched is removed from the carriage, shifting of rack 2|-3 (Fig. 4) byrelease of spring 2|5 will cause a square shoulder 226 (Fig. 5) to engage a block 221 of insulating material to close contacts 20|. referring to Fig. 16, are in series connection with the clutch trip magnet |15.

Thus it will be dear that after the card hasl been removed from the carriage the motor. restoring mechanism will be set into operation to automatically restore the card carriages without attentin of the operator.

As the carriage is returned free 'of the punched card, contacts l9l, closed at the lastcard column position, will now opento caus/e deenergization of magnet |99', the strippers 224 which have been positioned to the right of the punched card held by the gripper's are now shifted by a spring connected to link 2I9 to strip the card from the released grippers, the latter bein-g thereafter returned to normal latched position by the initial position of the card carriage. Figure 15 illustrates an auxiliary keyboard, which is used tov op' erate the keys 9 (Figs. 2 and 3) and the punches by energizing the selector magnets 60. The keys 230 (Fig. 15) correspond to the keys 9. Depression of a key 230 slides a bar 23| toward the'left (Fig. 15) by means of a bell crank 232. Ashoulder 233 on the bar 23| rocks 'a bail 234 counterclockwise, which through a projection 235v of a lever 236 pivoted on a shaft 231 rocks said lever 236 also counterclockwi'se tovclosecontacts 238' (see also Fig. 16). 'I'he contacts 23,8 are common to all of the keys 230 and are closed upon depression of any one of said keys.

Individual contacts 239, one pair being provided for each key 230, are also closed Aby depres- .sion a key. There is one bar 23| for each Aof the keys 230 which bar is slid to the left upon de, pression of its associated key. Mounted on shaft 231 is' aLseries of levers exactly like the lever 236 excepting that the' projection 235 is omitted. Al-

so a series of levers 240 yis mounted ona shaft 24 There is a lever 236 or a lever 240 for each key ,230 and leftward movement of a bar 23| upon These contacts,

depression of its key 230 rocks the lever 236 or 240 corresponding to the depressed key counterclockwise to close the associated pair bf contacts 239 (see Fig. 16). The contacts 239,closed by levers 235 do not appear in Fig. 15 since they are behind and in line with the contacts 238.`

Depression of any one of the keys 230, therefore, closes the contacts 238 and the particular pair of contacts 239 associated with the depressed key. This establishes a circuit from linev |33 (Fig. 16) through contacts |36, wire 242, wire 243, contacts 236, common bar 244, the particular contacts 239 closed by the action of a key, wire 245, wire '246, selector magnet 60, wire |31 to line |34. Energization of the magnet 30 functions in the manner above described to operate the corresponding key 9 and punch 5 (Fig. 3).

-The keys 230 and contacts operated thereby v may be located adjacent to the keyboard illustrated in Figs. l0 and l2 for convenience of operation. The latter keyboard is known as the rate extension keyboard and includes a plurality of rate extension keys 241 arranged in two tiers one above the other (see Fig. 10). The keys 241 are pivotably mounted on rods 240 suitably supported in the machine. Springs 249 normally hold the key levers in their raised positions and restore the depressed keys to raised positions when they are released in al manner to be described later.

The entire rate extension key mechanism is inclosed in a casing 250, the i'ree ends of the keys 241 projecting through suitable openings -in the casing at the left-handA side th'ereof. In

their released position the keys normally rest against stop bars 25| extending transversely across the keys of each bank or tier. 'I'he downward movement of the keys is limited by a'stop bar 252 in each bank.

When a key in the upper bank is depressed vit is latched down by the action of a common latch bar 253 .engaging a shoulder 254 on the key. Likewise a common latch bar 255 engages a shoulder 256 on a depressedkey-in the lower bank and retains the key in depressed position. The latch bar 2 53 is pivoted at 251 and the bar 255 is pivoted at 258. A link 25,9 connects the latch bars of its ends secured to the bar 255 rocks said bar counterclockwise to engage the bar with the shoulder 256 if the depressed key is in the lower bank. The other ends of the springs 260 are suitably anchored to a projection of cross bar 269. This movement is transmitted by the link 259 to the latch bar 253 to engage said barwith the shoulder 254if a key was depressed in the upper bank.

Depression of any keyA 241 rocks the bars 253 and 255 thus releasing any other key in either bank erroneously depressed. The keys 241 are not otherwise-manually released. Means is provided to release A,the depressed key automatically during the .operation of the machine. YThis means includes a magnet 26| -(Figs. 10 and 17), thearmature 262 of which magnet is pivoted on the rod 258; a spring 263 normally holds, the armature v262 in retracted position against a stop. -screw 264.

clockwise carrying the latch bar 255, and through the connecting ylink 259, the latch bar 253ltherewith to release a key depressed either in the upper or lower bank. The springs 260 and 264 re' a make a plurality of connections from an emitter bar, illustrated generally at 265 (Fig. 17), tothe selector magnets 60 (Figs. 3 and 16). To this end each ofthe keys 241' carries a plurality vof contact members 266 adapted upon depression of a key to make electrical contact with a series of contact bars 261 mounted on dielectric@ plates ,268 (Fig. suitably supported on cross bars 269. The contact bars 261 extend beneath all of the keys and at right angles thereto, each bar.

being provided with a plurality of beveled projections, one for the corresponding contacts 266 on each of the associated keys, (see Fig. 13). The corresponding upper and lower bars 261 are connected together. The twelvecontact bars 261 at the right (Figs. 10 and 17) are connected by" Wires l210 and 246 to the selectorinagnets 60. The remaining twenty bars 261, with the exceptionof the extreme left hand one, are connected either directly by wires 21| or through contacts 212 to the columnar contacts 213 of the emitter bar 265.

The emitter bar 265 (Fig. 17) is provided with a common contact bar 214 with which cc-operates a brush 215. This brush is one of a set of three brushes which are electricallyconnected and all of which aredesignated by the numeral 215. Thevother brushes .215 co-operate with the row of contacts 213. 'I'he brushes 215 are carried by the card carriage and escape column by column therewith, successively contacting the columnarV contacts 213.

Referring now to Figure 12, it may be noted that there is provided a group of ve keys 216 lo- -cated to the left of the rate keys 241. These keys are the date keys and serve to control circuits from the date column contacts (columns 36 to 43 inclusive-see Fig. 1M to the selector magnets 60 (Fig. 16). The keys 216 bearthe legends R," Pr 1, Pr 2, Ps 1, and Ps 2. These legends refer to the relation of the date of the previous meter reading to the date of the present meter reading. That is, if the meter was read .on the same day of the previous month as the present reading the R'f key 216 is depressed. The Pr 1 or Pr 2 key is depressed if the pre-1 vious reading Was taken during the previous month one or two days in advance of the date of the present reading. Likewise, if the previous reading was made during the previous month one or two days after the corresponding date of the present reading the Ps l or Ps 2 key is de-vv pressed. f

Referring to Figure 17, only two of the date keys, namely, Pr 1 and Ps 2 are shown, the

remaining date keys being just like those illus-l trated. Each of the Adate keys 216'is'provided With pairs of contccts '211 and 218, each pair being electrically connected and effective, when a key 216 is depressed, to co-.operate with contacts 219 and 280 respectively.

Depression of the date key Pr 1 closes con.- tacts 211 and 219 setting upa circuit from line |33 (Fig. 16), wire 286, the previously described latch contacts |36, wire 242, wire 281 (Fig 17),'

contacts.211` and 219, wire 288, magnet 289 (Fig. 16), wire 290 -to line |34. 'Ihis energizes magnet 289 which closes a series of contacts 29|. These contacts are connected by a cable 292 to the columnar contacts 213 (Fig. 17) for columns 36 to 43 inclusive. The contacts 29 are also connected to columnar plug sockets 293. lAnother group of plug sockets 294 are connected to the selector magnets 60 (Fig. 16) by the wires 210, 245, and

The date key Ps 1" also carries pairs of contacts 295 and 296 which, upon depression of said key, make contact with contacts 291 and 296'respectively. The contacts 295 and 291,v when closed setup a circuit from. line |33, wire 266,

contacts |36, wire 242, wire 299, contacts 295 and 291, wire 300, a. magnet 30|, wires 302 and 290 to line |34.v Energization of the magnet 30| closes a series of contacts )303 which are connected in parallel with'thecontacts 29| by a cable 304 and contact 213 for columns 36 to'43, inclusive,` (Fig.

'plug wire to the 4 socket 294.

This is also the case with respect to the plug sockets 305 and 306.- There are provided iive groups of contacts and plug sockets, one for each of the ve date keys 216. The contacts are connected in parallel by the cable 304 and the digital plug sockets are connected in parallel by the cable 301. Likewise, there is a magnet corresponding to eachA of the date keys and energized .thence by the cable 292 to the columnar contactsV l by closure of the corresponding key to select theV particular group of contacts to be closed. Each group is plugged up according to the date of the previousfmeter reading (columns 36 to 38) inclusive), the date of the present reading (columns39 to 41 inclusive) and the number of days between the previous yand present readings (col umns 42 and 43). An example of this plugging will now be given. As illustrated in Fig. 16, the plug socket 293 for column 36 is connected by a Column 37 socket is plugged to the 3 socket 4294. Column 38 socket is plugged tothe 0 socket 294. Column 39 socket is plugged to the 5 socket 294. Column 40 socket is plugged to the "3 socket 294,. Column 41 is pluggedv to the .l socket. Column 42 is plugged to the 3 socket and column 43 is plugged to the 1'socket 294. Thus in columns 36` to 43 inclusive Will be punched 43053131. This, with reference to the card (Fig. 18), indicates that the previous reading was made on the 4th month, the 30th day. The present reading being made on the thrmonth, the 31st day, and,

clusive .are punched manually, columns 36. to 43v inclusiveare the Adate columns and are punched under control of the date keys. Columns 44 to 47 inclusive are punched "manually Columns 48 to 56 inclusive are punched under-the selective 

